Door locking system

Abstract

A door locking system for opening and closing a door lock in a door. The door locking system includes a first door handle unit with a first door handle and a second door handle unit with a second door handle. The first door handle and the second door handle are pivotable about a common pivot axis. The door locking system comprises a coupling device with an axially aligned polygonal pin which has two pin pieces. The respective pin piece is connected to the respective door handle in a pivotably fixed manner.

1 . A door locking system ( 1 ) for opening and closing a door lock ( 6 ) in a door ( 2 ),
 wherein the door locking system ( 1 ) comprises a first door handle unit ( 3   a ) with a first door handle ( 4   a ) and a second door handle unit ( 3   b ) with a second door handle ( 4   b ),   wherein the first door handle ( 4   a ) and the second door handle ( 4   b ) are pivotable about a common pivot axis (DA),   wherein the door locking system ( 1 ) comprises a coupling device ( 7 ) with an axially aligned polygonal pin ( 10 ) which has a first pin piece ( 11   a ) and a second pin piece ( 11   b ),   wherein the first pin piece ( 11   a ) is connected to the first door handle ( 4   a ) in a pivotably fixed manner and the second pin piece ( 11   b ) is connected to the second door handle ( 4   b ) in a pivotably fixed manner, wherein   that the pin pieces ( 11   a ,  11   b ) of the polygonal pin ( 10 ) are separated from one another and only the first pin piece ( 11   a ) of the polygonal pin ( 10 ) can be coupled to the door lock ( 6 ),   that the coupling device ( 7 ) comprises an axially aligned coupling pin ( 8 ) which is arranged in the polygonal pin ( 10 ) and can be shifted axially into a coupling position and into a decoupling position, and   that the pin pieces ( 11   a ,  11   b ) of the polygonal pin ( 10 ) are connected to one another in a pivotably fixed manner in the coupling position of the coupling pin ( 8 ) and can be pivoted relative to one another in the decoupling position of the coupling pin ( 8 ).   
     
     
         2 . The door locking system according to  claim 1 , wherein
 that the coupling pin ( 8 ) projects axially outwardly from the first door handle ( 4   a ) and can be shifted manually from the coupling position into the decoupling position from the outside.   
     
     
         3 . The door locking system according to  claim 1 , wherein
 that the coupling device ( 7 ) comprises a resetting unit ( 17 ) which, when pivoting the first door handle ( 4   a ), shifts the coupling pin ( 8 ) from the decoupling position into the coupling position.   
     
     
         4 . The door locking system according to  claim 3 , wherein
 that the resetting unit ( 17 ) comprises a formation ( 18 ) and a ramp ( 19 ), wherein the formation ( 18 ) is arranged on the coupling pin ( 8 ) and projects radially therefrom, and the ramp ( 19 ) is formed transversely with respect to the pivot axis (DA) on the first pin piece ( 11   a ) of the polygonal pin ( 10 ) and faces the first door handle ( 4   a ), and   that in the decoupling position of the coupling pin ( 8 ), the formation ( 18 ) rests against the ramp ( 19 ) and slides axially along the ramp ( 19 ) when the first door handle ( 4   a ) is pivoted, thereby shifting the coupling pin ( 8 ) from the decoupling position into the coupling position.   
     
     
         5 . The door locking system according to  claim 4 , wherein
 that the resetting unit ( 17 ) comprises a coil spring ( 20 ) which is arranged around the coupling pin ( 8 ) and is axially supported on one side on the ramp ( 19 ) and is supported on the other side on a radially circumferentially extending stop edge ( 21 ) of the coupling pin ( 8 ), and   that the coil spring ( 20 ) is axially clamped in the decoupling position of the coupling pin and supports the axial displacement of the coupling pin ( 8 ) from the decoupling position into the coupling position when the first door handle ( 4   a ) is pivoted.   
     
     
         6 . The door locking system according to any one of  claims 1 , wherein
 that the coupling pin ( 8 ) has a pivot area ( 12 ) and a rotationally asymmetrical coupling area ( 13 ) axially adjacent thereto, and   that the coupling pin ( 8 ) and the first pin piece ( 11   a ) can be pivotably connected to one another via the pivot area ( 12 ), and   that for the coupling area ( 13 ), a first mating contour ( 14   a ) is formed in the first pin piece ( 11   a ) and a second mating contour ( 14   b ) is formed in the second pin piece, so that when the coupling area ( 13 ) engages with the respective mating contour ( 14   a ,  14   b ), the coupling pin ( 8 ) and the respective pin piece ( 11   a ,  11   b ) can be connected to one another in a pivotably fixed manner.   
     
     
         7 . The door locking system according to  claim 6 , wherein
 that in the decoupling position of the coupling pin ( 8 ), the coupling area ( 13 ) is arranged outside the first mating contour ( 14   a ) of the first pin piece ( 11   a ) and as a result, the pin pieces ( 11   a ,  11   b ) can be pivoted relative to one another, and   that in the coupling position of the coupling pin ( 8 ), the coupling area ( 13 ) is arranged in certain sections in the first mating contour ( 14   a ) of the first pin piece ( 11   a ) and in certain sections in the second mating contour ( 14   b ) of the second pin piece ( 11   b ) and as a result, the pin pieces ( 11   a ,  11   b ) are connected to one another in a pivotably fixed manner.   
     
     
         8 . The door locking system according to any one of  claims 1 , wherein
 that the coupling device ( 7 ) has a latching unit ( 16 ) which axially fixes the coupling pin ( 8 ) in the coupling position and in the decoupling position.   
     
     
         9 . The door locking system according to  claim 8 , wherein
 that the latching unit ( 16 ) comprises a radially resilient ball ( 22 ) and two openings ( 23 ,  24 ) which are axially adjacent to one another and radially aligned, wherein the ball ( 22 ) is latched into one opening ( 23 ) in the coupling position and into the other opening ( 24 ) in the decoupling position, and   that the openings ( 23 ,  24 ) are formed in the coupling pin ( 8 ) and the ball ( 22 ) is fixed to the second pin piece ( 11   b ) of the polygonal pin ( 10 ) or to the second door handle ( 4   b ) in a radially resilient manner and penetrates the second pin piece ( 11   b ) of the polygonal pin ( 10 ).   
     
     
         10 . The door locking system according to any one of  claims 1 , wherein
 that the door locking system ( 1 ) comprises the door lock ( 6 ) which is coupled to the first pin piece ( 11   a ) of the polygonal pin ( 10 ), and   that the door lock ( 6 ) can be opened in the decoupling position of the coupling pin ( 8 ) exclusively by pivoting the first door handle ( 4   a ) and can be opened in the coupling position of the coupling pin ( 8 ) by pivoting the first door handle ( 4   a ) or by pivoting the second door handle ( 4   b ).